#3F30BC#3F30BC

#3F30BC is a dark, highly saturated blue. Relative luminance 0.068; OKLCH L 42.9% C 0.207 H 278.0°. Best body text is #FFFFFF at 8.90:1 contrast (WCAG AA passes).

Color values

HEX	#3F30BC
RGB	rgb(63, 48, 188)
HSL	hsl(246, 59%, 46%)
HSV	hsv(246, 74%, 74%)
CMYK	cmyk(66.5%, 74.5%, 0%, 26.3%)
CIE-LAB	lab(31.35, 48.00, -70.83)
CIE-LCH	lch(31.35, 85.56, 304.12°)
OKLab	oklab(42.91% 0.0286 -0.2046)
OKLCH	oklch(42.91% 0.207 278)
XYZ	xyz(12.1810, 6.8005, 48.2379)
Luminance	0.0680 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F30BC #ADBC30

analogous

#3067BC #3F30BC #8530BC

triadic

#3F30BC #BC3F30 #30BC3F

tetradic

#3F30BC #BC3067 #ADBC30 #30BC85

square

#3F30BC #BC3067 #ADBC30 #30BC85

split-complementary

#3F30BC #BC8530 #67BC30

monochromatic

#1E175A #2F248B #3F30BC #6355D4 #9086E0

Accessibility & contrast

On white

8.90

#3F30BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.36

#3F30BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F30BC

8.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F30BC	#FFFFFF	#000000	##FFFFFF
##3F30BC	1.00	8.90	2.36	8.90
#FFFFFF	8.90	1.00	21.00	1.00
#000000	2.36	21.00	1.00	21.00
##FFFFFF	8.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FC0

Deuteranopia (green-blind)

#0044B9

Tritanopia (blue-blind)

#005874

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f30bc;
/* rgb */ color: rgb(63, 48, 188);
/* oklch */ color: oklch(42.9% 0.207 278.0);

Tailwind

colors: {
  custom: {
    50: '#856bd1',
    500: '#3f30bc',
    950: '#000000',
  },
}

SCSS

$custom: #3f30bc;
$custom-light: #856bd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f30bc",
  "rgb": {
    "r": 63,
    "g": 48,
    "b": 188
  },
  "hsl": {
    "h": 246.429,
    "s": 59.322,
    "l": 46.275
  },
  "oklch": {
    "l": 0.42905,
    "c": 0.20657,
    "h": 278
  },
  "luminance": 0.06802
}

Semantic roles & 50–950 ramp

primary

#3F30BC

secondary

#C2CA7E

accent

#E345D2

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3F30BC

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →